Apparatus for purification of water area

ABSTRACT

A regional water purifier collects blue green algae continuously by using a water flow produced by the operation of a water flow generator, and continuously and efficiently processes the algae to make it inactive by irradiating ultrasonic waves thereon. Thus, regional water purification is performed efficiently at a far lower cost than the conventional method through the blue green algae processing. The purifier includes a blue green algae processing duct  2 , which is disposed under water where blue green algae breed in large quantities, and has an ultrasonic wave transmitter  3  therein for transmitting ultrasonic waves to process the blue green algae with the ultrasonic waves. Both ends of the duct  2  are open, and a water flow generator  4  produces a suction flow for sucking water containing blue green algae into the blue green algae. processing duct  2  from a first end  2   a  and a discharge flow for discharging the water from the second end  2   b.

BACKGROUND OF THE INVENTION

1. Field of the Invention

The present invention relates to a regional water purifier in whichphytoplankton, especially blue green algae, breeding in large quantitiesin an enclosed water is collected by using a water flow generated by theoperation of a water flow generator, and is processed to be madeinactive by irradiating an ultrasonic wave, by which the regional watersare purified through blue green algae processing.

2. Description of the Prior Art

As a result of the propagation of phytoplankton, especially blue greenalgae, breeding in large quantities in eutrophicated water, the watersurface is covered with a green substance. As a result, there are manyin Japan and foreign countries where the green substance poses a problemin terms of environmental protection of water and visual access.

To solve this problem, many anti-blue green algal measures have beenattempted. These measures are classified broadly as follows:

(1) Collective removal

1) Mechanical collection, removal

2) Air bubble pluming, removal

(2) Degradation, sedimentation

1) Degradation using biological drug

2) Sedimentation using biological drug

(3) Algae processing/cell destruction

1) Mechanical method

a) High pressure

b) Impact pressure

c) Others

2) Chemical method

a) Anti-algal additives

(4) Propagation control

(Control of water temperature, pH, nitrogen, phosphorus, compositionratio change, etc.)

Although all of the aforementioned measures of (1) to (4) have beenattempted, only (3)-2)-a) addition of copper sulfate solution achieved arelatively distinct effect. Other, measures scarcely have any effect inrelation to great effort, and if they have, the effect is very little,and their cost: effectiveness is very low. At present, there are noeffective antiblue green algal measures.

For example, a notable anti-blue green algal measure is the collectionand removal (corresponding to the above item of (1)-1)) using a surfacelayer algae collector vessel, which has been used practically in LakeKasumiga-Ura and other places. With this method, an expensive algaecollector vessel must always be provided, and endless collection workmust be continued to collect infinitely propagating blue green algae inunmeasured numbers. Further, it takes much time and cost to remove,after filtering and dehydration, large quantities of collected bluegreen algae. Therefore, this method is not practical, and notmodernistic as a technology in the modern technical society.

Also, the above item (2) has a problem in that this method is effectivein one type of blue green algae but ineffective in another type bluegreen algae. Thus, it is generally difficult to say that this method hasa remarkable effect.

Further, the above item (3)-2) sometimes has a significant effect.However, this method is hated or prohibited as the present measures inreservoirs, lakes, and rivers because a chemical substance is injectedin the system.

SUMMARY OF THE INVENTION

The present invention has been made in view of the above situation tosolve the above problems. Accordingly, an object of the presentinvention is to provide a regional water purifier in which blue greenalgae are collected continuously by using a water flow produced by theoperation of a water flow generator, and continuously and efficientlyprocessed to be made inactive by irradiating ultrasonic waves thereon.Thus, which regional water purification is performed efficiently at afar lower cost than the conventional method through the blue green algaeprocessing.

To achieve the above object, the invention provides a regional waterpurifier comprising a blue green algae processing duct, which isdisposed under water in regional waters where blue green algae breed inlarge quantities. The processing unit has an ultrasonic wave transmittertherein for transmitting ultrasonic waves to process the blue greenalgae with the ultrasonic waves so as to make them inactive, and bothends of the processing duct are open. The purifier also comprises awater flow generator, which produces a suction flow for sucking watercontaining blue green algae into the blue green algae processing ductfrom one end, and a discharge flow for discharging the water from theother end.

Here, an ultrasonic wave reflector may be mounted on the innerperipheral surface of the blue green algae processing duct, and theultrasonic wave reflector may be formed by a n irregular reflector.

The ultrasonic wave transmitter may be disposed in a ring shape at theinside center of the blue green algae processing duct so that theultrasonic waves are transmitted radially from the inside center towardthe inner peripheral surface, or the ultrasonic wave transmitter may bedisposed obliquely on the inner peripheral surface at the other end ofthe blue green algae processing duct toward one end thereof. Further,the ultrasonic wave transmitter may be disposed at the other end of theblue green algae processing duct toward one end thereof.

The water flow generator may be disposed at the other end of the bluegreen algae processing duct, or the water flow generator may beincorporated in a rectifier duct consisting of a duct having both endsopen to enhance the water flow generating capability of the water flowgenerator. Further, the water flow generators may be disposed in pluralnumbers at appropriate intervals in the duct axis direction at theinside center of the blue green algae processing duct, and theultrasonic wave transmitters may be disposed in plural numbers atappropriate intervals in the duct axis direction of the blue green algaeprocessing duct.

The blue green algae processing duct may be curved so that one end ofthe suction inflow side is placed horizontally in the vicinity of thewater surface, and the other end of the discharge side is placedhorizontally at a position deeper than one end. Alternatively, the bluegreen algae processing duct may be curved so that one end of the suctioninflow side is placed horizontally in the vicinity of the water surface,and the other end of the discharge side is placed horizontally on thewater bottom side. Further, one end at the suction inflow side of theblue green algae processing duct may be expanded in a trumpet shape.

Ozone may be mixed with the discharge flow. Also, the water flowgenerator may be provided with an ozone gas aerating part.

The invention also provides a regional water purifier in which anultrasonic wave transmitter for transmitting ultrasonic waves to processblue green algae with the ultrasonic waves so as to make them inactiveand an ultrasonic wave reflector are disposed opposite to each other ina water channel of regional waters where blue green algae breed in largequantities. A water flow generator is provided to produce a dischargeflow for discharging the water containing blue green algae toward theregional waters where the ultrasonic wave transmitter and the ultrasonicwave reflector are disposed.

Here, the ultrasonic wave transmitter may be disposed on one sidesurface of the water channel, and the ultrasonic wave reflector may bedisposed on the other side surface of the water channel. Alternatively,the ultrasonic wave transmitters may be disposed in plural numberstoward both side surfaces of the water channel at the center of thewater channel of regional waters where blue green algae breed in largequantities, and the ultrasonic wave reflectors may also be disposed inplural numbers on both side surfaces of the water channel of regionalwaters where blue green algae breed in large quantities.

The ultrasonic wave reflector may be by an irregular reflector.

The water flow generator may be incorporated in a flow regulating ductconsisting of a duct having both ends open to enhance the water flowgenerating capability of the water flow generator.

Ozone may be mixed with the discharge flow. Also, the water flowgenerator may be provided with an ozone gas aerating part.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 is a schematic side view of a regional water purifier showingEmbodiment 1 of the present invention;

FIG. 2 is another schematic side sectional view of a regional waterpurifier showing Embodiment 1 of the present invention;

FIG. 3 is another schematic side sectional view of a regional waterpurifier showing Embodiment 1 of the present, invention;

FIG. 4 is another schematic side view of a regional water purifiershowing Embodiment 1 of the present invention;

FIG. 5 is another schematic side sectional view of a regional waterpurifier showing Embodiment 1 of the present invention;

FIG. 6 is a side sectional view of a blue green algae processing ductand a rectifier duct showing Embodiment 1 of the present invention;

FIG. 7 is a side sectional view of a blue green algae processing ductand a rectifier duct showing Embodiment 1 of the present invention;

FIG. 8 is a side sectional view of a blue green algae processing ductand a rectifier duct showing Embodiment 1 of the present invention;

FIG. 9 is a side sectional view of a blue green algae processing ductand a rectifier duct showing Embodiment 1 of the present invention;

FIG. 10(A) is a front view of a blue green algae processing duct showingEmbodiment 1 of the present invention, and

FIG. 10(B) is a side sectional view of a blue green algae processingduct showing Embodiment 1 of the present invention;

FIG. 11 is a side sectional view of a blue green algae processing ductand a rectifier duct showing Embodiment 1 of the present invention;

FIG. 12 is a side sectional view of a blue green algae processing ductshowing Embodiment 1 of the present invention;

FIG. 13 is a side sectional view of a water flow generator showingEmbodiment 1 of the present invention;

FIG. 14 is a plan view showing Embodiment 2 of the present invention;and

FIG. 15 is a plan view showing Embodiment 2 of the present invention.

DESCRIPTION OF THE PREFERRED EMBODIMENTS

The present invention will be described in detail with reference toembodiments shown in the accompanying drawings.

Embodiment 1

In FIGS. 1 to 13 show Embodiment 1 of the present invention, a regionalwater purifier 1, which purifies enclosed water through blue green algaeprocessing. The water purifier consists mainly of a blue green algaeprocessing duct 2 which incorporates an ultrasonic wave transmitter 3generating ultrasonic waves into water in the regional waters where bluegreen algae breed in large quantities to process the blue green algaewith the ultrasonic waves so as to make them inactive. Both ends of theprocessing duct are open, and a water flow generator 4 generates asuction flow for sucking water containing blue green algae into the bluegreen algae processing duct 2 from its first end 2 a (inlet end) and adischarge flow for discharging the water from the second end 2 b (outletend).

The regional water purifier 1 is used by being hung from alater-described floating body 12 and held under the water surface, or bybeing placed on the bottom of the water. In the case where the regionalwater purifier 1 is held under the water surface, the blue green algaeprocessing duct 2 and a flow regulating duct 5 incorporating the waterflow generator 4 are held by hanging members 12 a of the later-describedfloating body 12 which floats on the water surface, and are locatedunder the water surface below the floating body 12. The water flowgenerator 4 is generally incorporated in the flow regulating duct 5.

The blue green algae processing duct 2 has, for example, a hollowcylindrical shape, and both ends thereof are open. It is placed underwater in the regional waters where blue green algae breed in largequantities. With the blue green algae processing duct 2, watercontaining blue green algae flows into the first end 2 a of the duct bythe suction flow produced by the water flow generator 4, and the bluegreen algae floating under water are processed to be made inactive byultrasonic waves generated by the ultrasonic wave transmitter 3incorporated in the duct. After processing, the blue green algae aredischarged together with water through the second end 2 b.

Usually, the blue green algae processing duct 2 is placed in regionalwaters where blue green algae breed in large quantities so that the ductaxis direction thereof is horizontal. However, it is sometimes arrangedin a curved state as shown in FIGS. 2 to 5.

For example, as shown in FIGS. 2 and 3, the blue green algae processingduct 2 is formed so that the halfway portion thereof is bent obliquelyin such a manner that the first end 2 a at the suction inflow side(inlet end) is disposed horizontally in the vicinity of the watersurface and the second end 2 b (outlet end) on the discharge side isdisposed horizontally at a position deeper than the first side 2 a.

Also, for example, as shown in FIGS. 4 and 5, the blue green algaeprocessing duct 2 is sometimes formed so that the halfway portionthereof is bent at right angles in such a manner that the first end 2 aon the suction inflow side is arranged in an upward (vertical) directionin the vicinity of the water surface and the second end 2 b on thedischarge side is disposed horizontally on the water bottom side.

Further, for example, as shown in FIGS. 5 and 6, the blue green algaeprocessing duct 2 is sometimes formed so that the first end 2 a on thesuction inflow side is expanded in a trumpet shape. Also, for example,as shown in FIGS. 3 and 4, only the opening periphery of the first end 2a on the suction inflow side of the blue green algae processing duct 2is expanded in a trumpet shape. Alternatively, as shown in FIG. 6, theblue green algae processing duct 2 is formed in a trumpet shape so thatthe cross-sectional area thereof increases gradually from the second end2 b toward the first end 2 a.

On the inner peripheral surface of the blue green algae processing duct2 ,for example, as shown in FIGS. 7 to 9, an ultrasonic wave reflector 2c is usually mounted to reflect the ultrasonic waves transmitted fromthe ultrasonic wave transmitter 3. A metal plate is used as theultrasonic wave reflector 2 c. The ultrasonic waves transmitted from theultrasonic wave transmitter 3 are reflected repeatedly by the ultrasonicwave reflector 2 c, by which the ultrasonic waves stay in the blue greenalgae processing duct 2 for a long period of time, so that the floatingblue green algae are easily processed to be made inactive.

The ultrasonic wave reflector 2 c is configured so that the reflectingsurface is formed into a flat surface as shown in FIG. 7, or so that thereflecting surface is formed into an irregularly reflecting surfacewhich irregularly reflects the ultrasonic waves as shown in FIGS. 8 and9. When the irregularly reflecting surface is formed, for example, asshown in FIG. 9, an irregular bent line surface is formed. Theultrasonic wave reflector 2 c is also sometimes omitted as necessary.

The ultrasonic wave reflector 2 c is configured so that the reflectingsurface is formed into a flat surface as shown in FIG. 7, or so that thereflecting surface is formed into an irregularly reflecting surface(i.e., non-planar) which irregularly reflects the ultrasonic waves asshown in FIGS. 8 and 9. Specifically, the reflecting surface may beformed as a wavy surface as shown in FIG. 8, or as a surface having aseries of triangular ridges as shown in FIG. 9. When the irregularlyreflecting surface is formed, for example, as shown in FIG. 9, anirregular bent line surface is formed. The ultrasonic wave reflector 2 cis also sometimes omitted as necessary.

The ultrasonic wave transmitter transmits ultrasonic waves to perform afunction of processing to make inactive, by the impact of ultrasonicwaves, the blue green algae contained in water flowing through the bluegreen algae processing duct 2. Specifically, it irradiates ultrasonicwaves on the blue green algae and gives impact to them. Thereby, gasvacuoles in the blue green algae, which perform a buoyancy function, aredestroyed, so that the blue green algae settle without refloating, andthereby they are placed in an inactive state which is similar to aperishing state. Therefore, the blue green algae can be processed.

The ultrasonic wave transmitter 3 is connected to an ultrasonic wavegenerator 3 a, an electrical energy supply source, installed on thefloating body 12 or on land via a wire 3 b. Ultrasonic waves aretransmitted by being vibrated by the electrical energy amplified by theultrasonic wave generator 3 a , whereby the blue green algae areprocessed.

The ultrasonic wave transmitter 3 mounted in the blue green algaeprocessing duct 2 is installed so as to efficiently irradiate ultrasonicwaves on the blue green algae contained in water flowing the blue greenalgae processing duct 2. For example, as shown in FIGS. 1 and 12, theultrasonic wave transmitter 3 is installed on the inner peripheralsurface at the upper part of the blue green algae processing duct 2 in asingle number or in plural numbers at appropriate intervals to transmitultrasonic waves in the duct 2.

Also, for example, as shown in FIG. 10, the ultrasonic wave transmitter3 is installed by being supported by support members 3 c at the ductcenter of the blue green algae processing duct 2 ,and is configured totransmit ultrasonic waves radially from the central portion toward theinner peripheral surface.

Also, for example, as shown in FIGS. 7 to 9, the ultrasonic wavetransmitter 3 is sometimes installed on the inner peripheral surface atthe second end 2 b of the blue green algae processing duct 2 so as to beobliquely angled toward the first end 2 a, that is, the inlet end, andis configured so as to transmit ultrasonic waves angled obliquely towardthe first end 2 a of the blue green algae processing duct 2. In thiscase, the obliquely transmitted ultrasonic waves advance toward thefirst end 2 a of the blue green algae processing duct 2 while beingrepeatedly reflected many times by the inner peripheral surface of theblue green algae processing duct 2.

For example, as shown in FIG. 11; the ultrasonic wave transmitter 3 issometimes installed at the second end 2 b of the blue green algaeprocessing duct 2 s that it faces toward the first end 2 a, that is, theinlet end, and is configured so as to transmit ultrasonic waves towardthe first end 2 a of the blue green algae processing duct 2. In thiscase, the ultrasonic wave transmitter 3 is installed at a part of thesecond end 2 b, which is open, so as not to obstruct the discharge flowto the utmost. When a rectifier duct 5 is installed at the second end 2b of the blue green algae processing duct 2, one or several ultrasonicwave transmitters 3 are installed at certain intervals at the openportion at the outer periphery of the flow regulating duct 5.

The water flow generator 4 produces a suction flow for sucking watercontaining blue green algae into the blue green algae processing duct 2through the first end 2 a thereof and a discharge flow for dischargingthe water from the second end 2 b of the blue green algae processingduct 2. Usually, the flow generator is incorporated in a flow regulatingduct 5 having a function of increasing the function of the water flowgenerator 4. However, for example, as shown in FIG. 12, the water flowgenerator 4 is sometimes incorporated independently in the blue greenalgae processing duct 2.

When the water flow generator 4 is incorporated in the flow regulatingduct 5, it is installed at the second end 2 b of the blue green algaeprocessing duct 2 so that the axis thereof coincides with the duct axisof the flow regulating duct 5 incorporating the water flow generator 4.The injection direction of water injected from the water flow generator4 is the same as the duct axis direction of the flow regulating 5, sothat the water flowing from one open end of the flow regulating duct 5is injected and discharged from the second end on the opposite side.

For example, as shown in FIG. 13, an inside portion 4 a, which is a flowpath having both ends open, is formed in the water flow generator 4. Theinside portion 4 a is formed in the lengthwise direction, that is, theaxial direction of the water flow generator 4. The inside portion 4 ahas a cylindrical, shape. The downstream end of the cylindrical insideportion 4 a consists of a water flow generator discharge port 4 b, andthe upstream end thereof consists of a water flow generator inflow port4 c.

On the flow path inside wall surface at an intermediate part of theinside portion 4 a, an injection port 4 d for injecting water isarranged in the inner peripheral direction. The injection port 4 d isformed around the inner periphery of the inside portion 4 a. Theinjection port thus formed is arranged obliquely toward the water flowgenerator discharge port 4 b at the downstream end of the inside portion4 a.

The water injected from the injection port 4 d formed obliquely towardthe water flow generator discharge port 4 b is injected at a highvelocity toward the water flow generator discharge port 4 b at thedownstream end of the inside portion 4 a. This high-velocity injectionflow allows a negative pressure region to appear on the upstream side ofthe injection port 4 d, and performs a function of sucking anddischarging the later-described ozone.

In the section of the water flow generator 4 on the outside of theinside portion 4 a, an annular drive water chamber 4 e is formed so asto communicate with the injection port 4 d. The drive water chamber 4 eis a supply water injected through the injection port 4 d, and theinjection port 4 d is formed on the downstream side of the drive waterchamber 4 e so that the water chamber 4 e and injection port 4 dcommunicate with each other.

The flow regulating duct 5, which further enhances the function of thewater flow generator 4 incorporated therein, is provided with the waterflow generator 4 therein. The flow regulating duct 5 incorporating thewater flow generator 4 is installed at the other end 2 b of the bluegreen algae processing duct 2 ,which is open.

The diameter of the opening of the flow regulating duct 5 is usuallysmaller than the diameter of the opening of the second (discharge) end 2b of the blue green algae processing duct 2. The flow regulating duct 5is installed at the central portion of the second end 2 b of the bluegreen algae processing duct 2, which is open. At the second end 2 b ofthe blue green algae processing duct 2, to which the flow regulatingduct 5 is installed, an annular opening is formed on the outer peripheryof the flow regulating duct 5, so that part of water flowing in the bluegreen algae processing duct 2 is discharged from the annular opening.

Since part of the water flowing in the blue green algae processing duct2 is discharged from the annular opening on the outer peripheral side ofthe flow regulating duct 5, the velocity of water flow induced by thewater flow generator 4 is decreased effectively, and the time requiredfor water containing blue green algae to pass through the duct isincreased, so that the ultrasonic wave irradiating time on the bluegreen algae, which passes through the duct, is sufficiently.

For example, as shown in FIG. 6, the flow regulating duct 5incorporating the water flow generator 4 sometimes has the same diameteras that of the second end 2 b of the blue green algae processing duct 2.In this case, one end of the flow regulating duct 5 is connected to thesecond end of the blue green algae processing duct 2, so that all of thewater discharged from the second end of the blue green algae processingduct 2 flows in the flow regulating duct 5 and is discharged into wateron the outside.

The flow regulating duct 5 prevents the water injected from the waterflow generator 4 from being scattered immediately after injection, anddirects the water straight to a far distance. By scattering the water ata far position, it performs a function of agitating the enclosed waterin a short time. Although the flow regulating duct 5 is placed at thewater bottom so that both ends thereof are open substantiallyhorizontally, it may be placed at an arbitrarily inclined angle asnecessary.

The flow regulating duct 5 is formed as a cylinder, and both endsthereof are open. One open end consists of a water inflow port 5 a, andthe other end consists of a water discharge port 5 b. At the lower partof the flow regulating duct 5, support members 5 c for positioning theflow regulating duct 5 horizontally on the bottom of a body of water andsupporting it are installed on the front side and rear side in the ductaxis direction.

The drive water chamber 4 e of the water flow generator 4 is connectedto one end of a drive water supply pipe 6. The other end of the drivewater supply pipe 6 is connected to a drive water pump 7. The drivewater pump 7 supplies the water as injection water to the water flowgenerator 4 through the drive water supply pipe 6.

On the flow path inside wall surface of the inside portion 4 a on theupstream side of the injection port 4 d, a plurality of ozone injectionholes 8 for injecting ozone are formed at equal intervals in the innerperipheral direction. Each ozone injection hole 8 is formed obliquelytoward the water flow generator discharge port 4 b at the upstream endof the inside portion 4 a. Each ozone injection hole 8 has a mechanismsuch that ozone is sucked and discharged-by the water injected at a highvelocity through the injection port 4 d on the downstream side.

In the section of the water flow generator 4 on the outside of theinside portion 4 a, an annular ozone supply chamber 8 a communicatingwith the ozone injection holes 8 is formed. The ozone supply chamber 8 ais located on the upstream side of the drive water chamber 4 e. Theozone supply chamber 8 a is a supply portion for ozone injected throughthe ozone injection holes. Each ozone injection hole 8 is formed on thedownstream side of the ozone supply chamber 8 a so as to communicatewith the ozone supply chamber 8 a.

The ozone supply chamber 8 a is connected with one end of an ozonesupply pipe 9. The other end of the ozone supply pipe 9 is connected toan ozone generator 10 provided on the later-described floating body 12on the water surface. The ozone generator 10 supplies the generatedozone to the water flow generator 4 through the ozone supply pipe 9.

The ozone generator 10 is adapted such that oxygen in air is changed toozone by irradiating, for example, ultraviolet rays of a particularwavelength region. In the hollow vessel, for example, a far ultravioletozone ray discharge tube is provided to irradiate ultraviolet rays. Anair compressor 11 for supplying air to the ozone generator 10 isprovided so as to be connected to the outside of the ozone generator 10.

The floating body 12 is a structure floating on the water surface. Thefloating body 12 is provided with the ultrasonic wave generator 3 a,which is an electrical energy supply source for the ultrasonic wavetransmitter 3, the drive water pump 7 for supplying injection water tothe water flow generator 4, the ozone generator 10, the air compressor11, and other equipment. The ultrasonic wave transmitter 3, the waterflow generator 4, ozone generator 10, and the like can be used at anarbitrary position in the water.

Also, when the blue green algae processing duct 2 is held under water inthe vicinity of the water surface, the blue green algae processing duct2 is supported by the hanging members 12 a in the water under thefloating body 12, and is held in the vicinity of the water surface. Itis to be noted that the ultrasonic wave generator 3 a, the drive waterpump 7, the ozone generator 10, the air compressor 11, and otherequipment maybe installed on land as in the case of the prior art. Also,the drive water pump 7 may be installed under water if necessary byusing a submerged pump.

The following is a description of the operation of the above embodiment.

In order to operate the ultrasonic wave transmitter 3 and the water flowgenerator 4, constituting the regional water purifier 1, the ultrasonicwave generator 3 a installed on the floating body 12 or on land and thedrive water pump 7 installed on the floating body 12 or on land, orunder water if necessary, are driven. Also, when the ozone generator 10is operated, the air compressor 11 installed on the floating body 12 oron land is driven.

If the ultrasonic wave generator 3 a installed on the floating body 12or on land is driven, the ultrasonic wave transmitter 3 provided in theblue green algae processing duct 2 vibrates, and transmits ultrasonicwaves toward the inside of the blue green algae processing duct 2.

Also, if the drive water pump 7 installed on; the floating body 12 or onland, or under water if necessary, is driven, the drive water pump 7takes in the water, sends the water under pressure to the drive watersupply pipe 6, and supplies it to the water flow generator 4 in the flowregulating duct 5 installed on the bottom of the water.

Further, if the air compressor 11 installed on the floating body 12 oron land is driven, the air compressor 11 sucks and compresses the air inthe atmosphere and sends it into the ozone generator 10. The ozonegenerator 10 is provided with, for example, the far ultraviolet ozoneray discharge tube, so that part of the oxygen in the sent air ischanged to ozone by the irradiation of far ultraviolet ozone rays. Theozone is allowed to flow down in the ozone supply pipe 9 to be suppliedto the water flow generator 4 in the rectifier duct 5 placed on thebottom of the water.

The water supplied to the water flow generator 4 through the drive watersupply pipe 6 by the drive water pump 7 enters the annular drive waterchamber 4 e formed in the water flow generator 4, and is injected fromthe drive water chamber 4 e into the inside portion 4 a through theinjection port 4 d on the outlet side. The water injected into theinside portion 4 a through the injection port 4 d is injected at a highvelocity toward the water flow generator discharge port 4 b. The waterinjected at a high velocity pushes out the water on, the downstream sideof the injection port 4 d at a high velocity toward the water flowgenerator discharge port 4 b.

At this time, on the upstream side of the injection port 4 d of theinside portion 4 a, a negative pressure region is produced by the waterinjected toward the water flow generator discharge port 4 b. Theproduction of the negative pressure region generates a suction force. Bythis suction force, the water in the blue green algae processing duct 2is allowed to flow into the inside portion 4 a from the water flowgenerator inflow port 4c of the inside portion 4 a.

The water is sucked and flows to a location where the injection port 4 dof the inside portion 4 a is formed, and then is pushed out toward thewater flow generator discharge port 4 b at a high velocity by the waterinjected-toward the downstream side of the injection port 4 d.

On the other hand, the water in the blue green algae processing duct 2is sucked from the second end 2 b by the water flow generator 4 anddischarged. Therefore, a negative pressure region is produced at thefirst end 2 a of the blue green algae processing duct 2 ,and at thefirst end 2 a of the blue green algae processing duct 2, a suction flowfor sucking the water in the duct 2 is generated. Therefore, the watercontaining blue green algae flows into the blue green algae processingduct 2 from the first end 2 a, flows through the duct 2, and movestoward the second end 2 b.

The ultrasonic wave transmitter 3, which is provided in the blue greenalgae processing duct 2, transmits ultrasonic waves toward the inside ofthe duct 2. The ultrasonic waves transmitted in the blue green algaeprocessing duct 2 act on the water containing blue green algae directlyor while being reflected by the ultrasonic wave reflector 2 c when theultrasonic wave reflector 2 c is mounted on the inner peripheral surfaceof the blue green algae processing duct 2.

If the ultrasonic waves act on the water containing blue green algae,which moves in the blue green algae processing duct 2, the gas vacuolesperforming a function of buoyancy in the blue green algae floating inthe water are destroyed by the impact of the ultrasonic waves.Therefore, the blue green algae cannot float again, and thereby they arechanged into an inactive state, which is a state similar to a perishingstate, whereby the blue green algae can be processed.

Thus, the blue green algae breeding in large quantities in the enclosedbody of water are sucked from a first end 2 a of the blue green algaeprocessing duct 2 together with the water containing the blue greenalgae, and during the transfer in the duct 2, they are processed by theaction of ultrasonic waves transmitted from the ultrasonic wavetransmitter 3 provided in the blue green algae processing duct 2.Thereafter, the blue green algae are discharged from the second end 2 bof the blue green algae processing duct 2.

In the case where the flow regulating duct 5 incorporating the waterflow generator 4 is installed at the second end 2 b of the blue greenalgae processing duct 2, when the inside diameter of the second end 2 bof the blue green algae processing duct 2 is larger than the outsidediameter of the flow regulating duct 5, and an annular opening is formedat the outer periphery of the flow regulating duct 5, part of the watercontaining the processed blue green algae is discharged into the wateroutside of the second end 2 b of the blue green algae processing duct 2.The remaining water containing the processed blue green algae flows inthe rectifier duct 5 and the water flow generator 4 and is thendischarged into the water outside.

When the diameter of the flow regulating duct 5 is equal to the diameterof the second end 2 b of the blue green algae processing duct 2, and oneend of the flow regulating duct 5 is connected to the second end of theblue green algae processing duct 2, the water flowing in the blue greenalgae processing duct 2 enters the flow regulating duct 5, flowingthrough the flow regulating duct 5 and the water flow generator 4, andis discharged into the water outside. Also, when the water flowgenerator 4 is installed in the blue green algae processing duct 2, thewater is discharged into the water outside through the second end 2 b ofthe blue green algae processing duct 2.

The ozone supplied to the water flow generator 4 through the ozonesupply pipe 9 enters the annular ozone supply chamber 8 a formed in thewater flow generator 4, and is sucked and injected into the insideportion 4 a from the ozone supply chamber 8 a through the ozoneinjection holes 8 on the outlet side.

At the location of the inside portion 4 a where the ozone injectionholes 8 are formed, a negative pressure region is produced by the waterinjected through the injection port 4 d. By the suction force due to thenegative pressure, the ozone is sucked and injected from the ozoneinjection holes 8. The ozone sucked and injected in the inside portion 4a from the ozone injection holes 8 is mixed with water flowing in theinside portion 4 a at a high velocity toward the water flow generatordischarge port 4 b. As a result, the ozone has a very fine minute bubbleshape, and an ozone gas aerating water which is less liable to float isproduced. The ozone gas aerating water becomes a discharge flow injectedat a high-velocity from the water flow generator discharge port 4 b ofthe water flow generator 4.

Ozone is mixed with the discharge flow injected at a high velocity fromthe water flow generator discharge port 4 b. This ozone mixing waterflows in the rectifier duct 5 provided with the water flow generator 4therein, and is discharged at a high velocity on the bottom layer sideof the enclosed body of water outside of the ducts.

The processed blue green algae are mixed with the ozone gas aeratingwater discharged at a high velocity, so that the processed blue greenalgae, which are an organic substance, are decomposed by oxidation bythe oxidizing action of ozone. Therefore, the cause for the blue greenalgae to be accumulated on the water bottom as an organic substance andfor sludge to be formed and accumulated can be eliminated.

Also, the blue green algae/ozone mixing water injected at a highvelocity from the water flow generator discharge port 4 b is preventedfrom scattering to the surroundings immediately after the injection fromthe water flow generator 4 by passing through the duct inside of theflow regulating duct 5. Further, since the minute bubbles less liable tofloat are injected substantially straight in the discharge direction,the force of the injected blue green algae/ozone mixing water isprevented from decreasing, so that the mixing water can be injected to afar distance in a straight manner. Therefore, the blue green algae/ozonemixing water can be sent out to a far distance on the bottom layer sideof the enclosed body of water. Therefore, the blue green algae watermass can be circulated in the regional waters, thereby enhancing thealgae processing performance.

Embodiment 2

Next, Embodiment 2 of the present invention shown in FIGS. 14 and 15will be described.

A regional water purifier 21 is an apparatus for purifying a waterchannel 22 of an enclosed body of water through the blue green algaeprocessing. This apparatus consists mainly of an ultrasonic wavetransmitter, which transmits ultrasonic waves in the water channel 22 ofthe regional waters where blue green algae breed in large quantities toprocess the blue green algae with the ultrasonic waves so as to makethem inactive, an ultrasonic wave reflector 23 disposed opposite to theultrasonic wave transmitter 3, and a water flow generator 4, whichproduces a discharge flow for discharging water containing blue greenalgae toward the regional waters where the ultrasonic wave transmitter 3and the ultrasonic wave reflector 23 are disposed. The water flowgenerator 4 is generally used in a state of being incorporated in a flowregulating duct 5.

The configurations of the ultrasonic wave transmitter 3, water flowgenerator 4, flow regulating duct 5, drive water supply pipe 6, anddrive water pump 7 are the same as those in the aforementionedEmbodiment 1, and therefore the explanation there of omitted. Althoughnot shown in FIG. 15, the water flow generator 4 that is constructed sothat ozone is mixed is sometimes used as necessary. In this case, anozone injection hole 8, ozone supply chamber 8 a, ozone supply pipe 9,ozone generator 10, air compressor 11, and other equipment having thesame construction as that of Embodiment 1 are provided.

The configurations of the ultrasonic wave transmitter 3, water flowgenerator 4, rectifier duct 5, drive water supply pipe 6, and drivewater pump 7 are the same as those in the aforementioned Embodiment 1,and therefore the explanation thereof is omitted. Although not shown inFIG. 15, the water flow generator 4 that is constructed so that ozone ismixed is sometimes used as necessary. In this case, an ozone injectionhole 8, ozone supply chamber 8 a, ozone supply pipe 9, ozone generator10, air compressor 11, and other equipment having the same constructionas that of Embodiment 1 are provided.

In the case where the water channel 22 of the regional waters where bluegreen algae breed in large quantities is not so wide, as shown in FIG.14, the ultrasonic wave transmitter 3 is installed under water on oneside surface of the water channel 22, and the ultrasonic wave reflector23 is installed opposite to the ultrasonic wave transmitter 3 underwater on the other side surface opposite to the one side surface of thewater channel 22 where the ultrasonic wave transmitter 3 is installed.

In the case where the water channel 22 of the regional waters where bluegreen algae breed in large quantities is wide, as shown in FIG. 15, astructure 24 such as an artificial island or a floating body is disposedin the central portion of the water channel 22. A plurality ofultrasonic wave transmitters 3 are installed under water on the outerperipheral surface of the structure 24, and a plurality of ultrasonicwave reflectors 23 are installed opposite to the ultrasonic wavetransmitters 3 under water on both side surfaces of the water channel 22opposite to the plural ultrasonic wave transmitters 3 installed on theouter peripheral surface of the structure 24.

The ultrasonic wave reflectors 23 are installed so as to extend to bothsides with the ultrasonic wave transmitter 3 being the center, and alsoinstalled at positions where the ultrasonic waves transmitted from theultrasonic wave transmitter 3 can be reflected efficiently. For example,a metal plate that reflects ultrasonic waves is used as the ultrasonicwave reflector 23. The surface of the ultrasonic wave reflector 23 maybe formed into a flat surface, or may be formed into an irregularlyreflecting surface.

The ultrasonic wave transmitter 3 is connected to an ultrasonic wavegenerator 3 a, an electrical energy supply source, installed on theshore side of the water channel 22 via a wire 3 b. Ultrasonic waves aretransmitted by being vibrated by the electrical energy amplified by theultrasonic wave generator 3 a, whereby the blue green algae areprocessed.

On the upstream and downstream sides of the water channel 22 withrespect to the ultrasonic wave transmitter 3 and the ultrasonic wavereflector 23 installed opposite to each other, the water flow generator4 incorporated in the flow regulating duct 5 is disposed under the watersurface to allow water containing blue green algae to flow in theregional waters where the ultrasonic wave transmitter 3 and theultrasonic wave reflector 23 are installed opposite to each other.

The water flow generator 4 on the upstream side of the water channel 22is disposed so as to produce the water flow toward the downstream side,while the water flow generator 4 on the downstream side of the waterchannel 22 is disposed so as to produce the water flow toward theupstream side. Each water flow generator 4 disposed on the upstream anddownstream sides, respectively, is disposed near the side surface on theopposite side of the water channel 22, so that a circulating flow iseasily produced between the upstream side and the downstream side of thewater channel 22 where the water flow generator 4 is disposed.

The following is a description of the operation of this embodiment.

In order to operate the ultrasonic wave transmitter 3 and the water flowgenerator 4, constituting the regional water purifier 22, the ultrasonicwave generator 3 a and the drive water pump 7 are driven. Also, when theozone generator 10 is operated, the air compressor 11 is driven.

In the case where the water channel 22 is not so wide, if the ultrasonicwave generator 3 a is driven, the ultrasonic wave transmitter 3installed under water on one side surface of the water channel 22vibrates, and transmits ultrasonic waves toward the ultrasonic wavereflector 23 installed under water on the other side surface of thewater channel 22. In the case where the water channel 22 is wide, if theultrasonic wave generator 3 a is driven, the ultrasonic wavetransmitters 3 installed under water on the outer peripheral surface ofthe structure 24 disposed at the central portion of the water channel 22vibrate, and transmit ultrasonic waves toward the ultrasonic wavereflectors 23 installed opposite to the ultrasonic wave transmitters 3under water on both sides of the water channel 22.

Also, if the drive water pump 7 is driven, the drive water pump 7 takesin the water in the enclosed body of water, sends the water underpressure to the drive water supply pipe 6, and supplies it to the waterflow generator 4 in the flow regulating duct 5 installed under water.

Further, if the air compressor 11 is driven, the air compressor 11 sucksand compresses the air in the atmosphere and sends it into the ozonegenerator 10. The ozone generator 10 is provided with, for example, afar ultraviolet ozone ray discharge tube, so that part of oxygen in thesent air is changed to ozone by the irradiation of far ultraviolet ozonerays. The ozone is allowed to flow down in the ozone supply pipe 9 to besupplied to the water flow generator 4 in the flow regulating duct 5disposed under water.

The water supplied to the water flow generator 4 through the drive watersupply pipe 6 by the drive of the drive water pump 7 enters the annulardrive water chamber 4 e formed in the water flow generator 4, and isinjected from the drive water chamber 4 e into the inside portion 4 athrough the injection port 4 d on the outlet side. The injected waterinjected into the inside portion 4 a through the injection port 4 d isinjected at a high velocity toward the water flow generator dischargeport 4 b. The water injected at a high velocity pushes out the water onthe downstream side of the injection port 4 d at a high velocity towardthe water flow generator discharge port 4 b.

Thus, by the operation of the water flow generators 4 disposed in thewater channel 22 on the upstream and downstream sides of the waterchannel 22 where the ultrasonic wave transmitter 3 and the ultrasonicwave reflector 23 are installed, the water containing blue green algaeis allowed to flow into the regional waters where the ultrasonic wavetransmitter 3 and the ultrasonic wave reflector 23 are installed.

The ultrasonic waves which are transmitted from the ultrasonic wavetransmitter 3 and reflected by the ultrasonic wave reflector 23 act onthe water containing blue green algae flowing into the regional waterswhere the ultrasonic wave transmitter 3 and the ultrasonic wavereflector 23 are installed.

If the ultrasonic waves act on the water containing blue green algae inthe water channel 22, the gas vacuoles performing a function of buoyancyin the blue green algae floating in the water are destroyed by theimpact of the ultrasonic waves. Therefore, the blue green algae settleand cannot float again, and thereby they become inactive similar to aperishing state, whereby the blue green algae can be processed.

Thus, the blue green algae breeding in large quantities in the waterchannel 22 of the enclosed body of water are allowed to flow, togetherwith the water containing blue green algae, in the regional waters wherethe ultrasonic wave transmitter 3 and the ultrasonic wave reflector 23are installed by the water flow generator 4. During the transfer in theregional waters, the blue green algae are processed by the action ofultrasonic waves transmitted from the ultrasonic wave transmitter 3 andflows out to the outside of the regional body of water.

The ozone supplied to the water flow generator 4 through the ozonesupply pipe 9 enters the annular ozone supply chamber 8 a formed in thewater flow generator 4, and is sucked and injected into the insideportion 4 a from the ozone supply chamber 8 a through the ozoneinjection holes 8 on the outlet side.

At the location of the inside portion 4 a where the ozone injectionholes 8 are formed, a negative pressure region is produced by the waterinjected through the injection port 4 d. By the suction force due to thenegative pressure, the ozone is sucked and injected from the ozoneinjection holes 8. The ozone sucked andinjectedinthe inside portion 4 afrom the ozone injection holes 8 is mixed with water flowing in theinside portion 4 a at a high velocity toward the water flow generatordischarge-port 4 b. As a result, the ozone develops a very fine minutebubble shape, and an ozone gas aerating water less liable to float isproduced. This ozone gas aerating water forms a discharge flow injectedat a high velocity from the water flow generator discharge port 4 b ofthe water flow generator 4.

Ozone is mixed with the discharge flow injected at a high velocity fromthe water flow generator discharge port 4 b. This ozone mixing waterflows in the flow regulating duct 5 provided with the water flowgenerator 4 therein, and is discharged-at a high velocity on the bottomlayer side of the enclosed body of water of the outside.

On the bottom layer side of the regional waters to which the ozonemixing water is discharged at a high velocity, the processed blue greenalgae settle, so that the processed blue green algae, which are anorganic substance, are decomposed by oxidation by the oxidizing actionof ozone. Therefore, the blue green algae is prevented from beingaccumulated into sludge on the bottom of the water.

The present invention is not limited to the above embodiments, and,needless to say, can be modified variously without departing from thespirit of the present invention. For example, although the case whereozone is mixed has been explained in the aforementioned Embodiments 1and 2, the mixing of ozone may be omitted as necessary.

As is apparent from the above description, according to the regionalwater purifier in accordance with the present invention, the watercontaining blue green algae is sucked and allowed to flow into the bluegreen algae processing duct from one end of the blue green algaeprocessing duct. Ultrasonic waves are irradiated on the blue green algaeby the ultrasonic wave transmitter provided in the blue green algaeprocessing duct to impact the blue green algae, and the gas vacuolesperforming a function of buoyancy in the cells of blue green algae aredestroyed by the impact of the ultrasonic waves. Therefore, the bluegreen algae settle and cannot float again. As a result, they enter aninactive state, which is similar to a perishing state, whereby theso-called blue green algae can be processed. Moreover, since the bluegreen algae is processed by sucking and allowing the water containingblue green algae to flow into the blue green algae processing duct, theblue green algae can be processed efficiently in a wide regional waterswhere blue green algae breed in large quantities.

If an ultrasonic wave reflector is mounted on the inner peripheralsurface of the blue green algae processing duct 2 ,the ultrasonic wavesirradiated from the ultrasonic wave transmitter are reflected by theultrasonic reflector. Thereby, when the blue green algae are processedby irradiating ultrasonic waves in the blue green algae processing duct,the blue green algae are processed by the reflected ultrasonic waves.The ultrasonic wave irradiating frequency of blue green algae in theblue green algae processing duct is enhanced, so that the blue greenalgae processing capacity can be enhanced.

If the ultrasonic wave transmitter 3 is disposed in a ring shape at theinside center of the blue green algae processing duct, as shown inFIG-10, so that the ultrasonic waves are transmitted radially from theinside center toward the inner peripheral surface, ultrasonic waves canbe irradiated uniformly from the inside center of the blue green algaeprocessing duct to the peripheral portion thereof Therefore, the bluegreen algae in the blue green algae processing duct can be processeduniformly.

If the ultrasonic wave transmitter is disposed obliquely on the innerperipheral surface at the other end of the blue green algae processingduct toward one end thereof, the ultrasonic waves can be irradiatedtoward one end while repeating reflections on the inner peripheralsurface of the blue green algae processing duct. Thus, the period oftime for the ultrasonic waves to stay in the blue green algae processingduct can be increased. Therefore, the period of time for the blue greenalgae to be processed by the ultrasonic waves can be prolonged, so thatthe blue green algae processing efficiency can be enhanced.

If the ultrasonic wave transmitter is disposed at the second end of theblue green algae processing duct toward one end thereof, the ultrasonicwaves can be irradiated uniformly on the water containing blue greenalgae. The water is sucked from the first end of the blue green algaeprocessing duct and flows in the blue green algae processing duct towardthe second end, so that the blue green algae processing efficiency canbe enhanced.

If the water flot generator is disposed at the second end of the bluegreen algae processing duct, the water flow generator discharges thewater in the blue green algae processing duct from the second endthereof, so that the interior of the blue green algae processing duct isin a negative pressure state. Therefore, a suction flow is produced atthe first end opposite to the second end, so that the water containingblue green algae can be allowed to flow in the blue green algaeprocessing duct.

If the water flow generators are disposed in plural numbers atappropriate intervals in the duct axis direction at the inside center ofthe blue green algae processing duct, and the ultrasonic wavetransmitters are disposed in plural numbers at appropriate intervals inthe duct axis direction of the blue green algae processing duct, whenthe blue green algae processing duct is long, the water containing bluegreen algae can be sucked therein from one end and discharged from theother end. Moreover, by the ultrasonic waves irradiated from the pluralultrasonic wave transmitters, the blue green algae flowing in the longblue green algae processing duct from the first end to the second endcan be processed surely.

If the blue green. algae processing duct is curved so that the first endof the suction inflow side is placed horizontally in the vicinity of thewater surface, and the second end of the discharge side is placedhorizontally at a position deeper than the first end, the blue greenalgae floating near the water surface can be processed in the blue greenalgae processing duct by being sucked and allowed to flow therein.

If the blue green algae processing duct is curved so that the first endof the suction inflow side is placed horizontally in the vicinity of thewater surface, and the second end of the discharge side is placedhorizontally on the water bottom side, the blue green algae floatingnear the water surface can be processed in the blue green algaeprocessing duct by being sucked and allowed to flow therein, and theprocessed blue green algae are discharged to the bottom layer ofregional waters. Therefore, the stagnancy and sedimentary tendency inthe bottom water layer can be prevented, and a water flow promotingeffect. can be enhanced.

If the first end of the suction inflow side of the blue green algaeprocessing duct is expanded in a trumpet shape, at a portion where thecross-sectional area of flow path is large, the flow velocity is low,and sufficient ultrasonic wave irradiating time is maintained. On theother hand, at a portion where the cross-sectional area is small, theflow velocity is increased, so that the water containing the processedblue green algae can be discharged efficiently.

Water containing blue green algae in a water channel is allowed to flowinto the water channel of regional waters where the ultrasonic wavetransmitter and the ultrasonic wave reflector are installed opposite toeach other. Ultrasonic waves are irradiated and reflected on the bluegreen algae by the ultrasonic wave transmitter and ultrasonic wavereflector to impact to the blue green algae. As a result, the gasvacuoles performing a function of buoyancy in the cells of blue greenalgae are destroyed by the impact of the ultrasonic waves. Therefore,the blue green algae settle and cannot float again, and thereby theyenter an inactive state, which is a state similar to a perishing state,whereby the so-called blue green algae can be processed. Moreover, sincethe blue green algae are processed by allowing the water containing bluegreen algae to flow into the water channel of regional waters where theultrasonic wave transmitter and the ultrasonic wave reflector areinstalled opposite to each other, the blue green algae can be processedefficiently in wide regional waters where blue green algae breed inlarge quantities.

If the ultrasonic wave transmitter is disposed on one side surface ofthe water channel, and the ultrasonic wave reflector is disposed on theother side surface of the water channel, by the reflection of ultrasonicwaves by the ultrasonic wave reflector, the ultrasonic waves can beapplied to the blue green algae on the water surface or in the waterfrom both sides of the water channel. Therefore, the blue green algae inthe wide water channel of regional waters can be processed efficientlyfrom both sides.

If the ultrasonic wave transmitters are disposed in plural numberstoward both side surfaces of the water channel at the center of thewater channel of regional waters where blue green algae breed in largequantities, and the ultrasonic wave reflectors are disposed in pluralnumbers on both side surfaces of the water channel of regional waterswhere blue green algae breed in large quantities, the ultrasonic wavescan be applied to the blue green algae on the water surface or-in thewater from the central portion and both sides of the water channel.Therefore, the blue green algae in the wide water channel can beprocessed efficiently from both sides.

If the ultrasonic wave reflector is formed as an irregular reflector,the ultrasonic waves are reflected in all directions in the blue greenalgae processing duct or in the water channel. Therefore, the blue greenalgae lying at any location in the blue green algae processing duct orin the water channel can be processed.

If the water flow generator is incorporated in a rectifier ductconsisting of a duct having both ends open to enhance the water flowgenerating capability of the water flow generator, the water flowproduced by the water flow generator flows in the rectifier duct and isnot scattered. Therefore, a strong water force is created, so thatstrong suction flow and discharge flow can be produced.

If ozone is mixed with the discharge flow, since the discharge flowcontains large quantities of processed blue green algae, the processedand discharged blue green algae are decomposed by the oxidation due toozone, and at the same time the water flow is promoted by the water flowgenerator. Therefore, the sludge formation caused by the sedimentationof the processed blue green algae on the bottom of the water can beprevented.

If the water flow generator is provided with an ozone gas aerating part,ozone can be mixed with the discharge flow by the water flow generatorwhich produces the discharge flow.

What is claimed is:
 1. A water purifier for purifying a body of water,comprising: a submersible processing duct operable to be fully submersedin the body of water to be purified and having a first open end and asecond open end opposite said first open end; a submersible ultrasonicwave transmitter arranged in said processing duct for transmittingultrasonic waves through water flowing through said processing duct; aflow regulating duct having a cross sectional area smaller than a crosssectional area of said processing duct and being arranged at said secondopen end of said processing duct; and a submersible water flow generatorarranged in said flow regulating duct for creating a flow of waterthrough said processing duct by creating a suction at said first openend to suck the water into said processing duct and by creating adischarge pressure at said second open end for discharging the waterfrom said second open end.
 2. The water purifier of claim 1, furthercomprising an ultrasonic wave reflector mounted on an inner peripheralsurface of said processing duct.
 3. The water purifier of claim 2,wherein said ultrasonic wave reflector comprises a reflector having anon-planar reflecting surface.
 4. The water purifier of claim 3, whereinsaid ultrasonic wave reflector comprises a reflector having a wavyreflecting surface.
 5. The water purifier of claim 3, wherein saidultrasonic wave reflector comprises a reflector having a reflectingsurface including a series of triangular ridges.
 6. The water purifierof claim 1, wherein said ultrasonic wave transmitter comprises aring-shaped transmitter arranged along a central axis of said processingduct such that ultrasonic waves are transmitted radially from saidring-shaped transmitter toward an inner peripheral surface of saidprocessing duct.
 7. The water purifier of claim 1, wherein saidultrasonic wave transmitter is located on an inner peripheral surface ofsaid processing duct at said second open end and is arranged so as toface toward said first open end at an oblique angle.
 8. The waterpurifier of claim 1, wherein said ultrasonic wave transmitter is locatedat said second open end and is arranged so as to face toward said firstopen end.
 9. The water purifier of claim 1, further comprising aplurality of ultrasonic wave transmitters spaced apart in a longitudinaldirection of said processing duct.
 10. The water purifier of claim 1,wherein said processing duct is curved such that a central axis of saidfirst open end is horizontal, and such that a central axis of saidsecond open end is horizontal at a position below said central axis ofsaid first open end.
 11. The water purifier of claim 10, wherein saidprocessing duct has a cross-sectional area gradually increasing towardssaid first open end.
 12. The water purifier of claim 1, wherein saidprocessing duct has a cross-sectional area gradually increasing towardssaid first open end.
 13. The water purifier of claim 1, furthercomprising a mechanism for mixing ozone with the water to be dischargedfrom said second open end of said processing duct.
 14. The waterpurifier of claim 1, wherein said water flow generator includes an ozonegas aerating mechanism.
 15. The water purifier of claim 1, wherein saidwater flow generator includes a water chamber communicating with aninjection port, said injection port being arranged at an oblique anglefor injecting water into an interior of said water flow generator towarda discharge port of said water flow generator, and including an annularozone chamber communicating with ozone injection holes located in saidwater flow generator upstream of said injection port for supplying ozoneinto water flowing through said water flow generator.
 16. A waterpurifier for purifying a body of water, comprising: a submersibleprocessing duct operable to be fully submersed in the body of water tobe purified and having a first open end and a second open end oppositesaid first open end, a cross-sectional area of said processing ductgradually increasing from said second open end towards said first openend; a submersible ultrasonic wave transmitter arranged in saidprocessing duct for transmitting ultrasonic waves through water flowingthrough said processing duct; and a submersible water flow generatorarranged at said second open end of said processing duct for creating aflow of water through said processing duct by creating a suction at saidfirst open end to suck the water into said processing duct and bycreating a discharge pressure at said second open end for dischargingthe water from said second open end.
 17. The water purifier of claim 16,further comprising a flow regulating duct having a first open end and asecond open end, wherein a cross sectional area of said first open endof said flow regulating duct is equal to a cross sectional area of saidsecond open end of said processing duct, and wherein said first open endof said flow regulating duct adjoins said second open end of saidprocessing duct.
 18. The water purifier of claim 17, wherein said waterflow generator is arranged within said flow regulating duct.
 19. Thewater purifier of claim 16, further comprising an ultrasonic wavereflector mounted on an inner peripheral surface of said processingduct.
 20. The water purifier of claim 19, wherein said ultrasonic wavereflector comprises a reflector having a non-planar reflecting surface.21. The water purifier of claim 20, wherein said ultrasonic wavereflector comprises a reflector having a wavy reflecting surface. 22.The water purifier of claim 20, wherein said ultrasonic wave reflectorcomprises a reflector having a reflecting surface including a series oftriangular ridges.
 23. The water purifier of claim 16, wherein saidultrasonic wave transmitter comprises a ring-shaped transmitter arrangedalong a central axis of said processing duct such that ultrasonic wavesare transmitted radially from said ring-shaped transmitter toward aninner peripheral surface of said processing duct.
 24. The water purifierof claim 16, wherein said ultrasonic wave transmitter is located on aninner peripheral surface of said processing duct at said second open endand is arranged so as to face toward said first open end at an obliqueangle.
 25. The water purifier of claim 16, wherein said ultrasonic wavetransmitter is located at said second open end and is arranged so as toface toward said first open end.
 26. The water purifier of claim 16,wherein said processing duct is curved such that a central axis of saidfirst open end is horizontal, and such that a central axis of saidsecond open end is horizontal at a position below said central axis ofsaid first open end.
 27. The water purifier of claim 16, wherein saidwater flow generator includes an ozone gas aerating mechanism.
 28. Thewater purifier of claim 16, wherein said water flow generator includes awater chamber communicating with an injection port, said injection portbeing arranged at an oblique angle for injecting water into an interiorof said water flow generator toward a discharge port of said water flowgenerator, and including an annular ozone chamber communicating withozone injection holes located in said water flow generator upstream ofsaid injection port for supplying ozone into water flowing through saidwater flow generator.